Revision Difference
Shaders/DepthWrite#565446
<cat>shader</cat>⤶
<title>DepthWrite</title>⤶
⤶
<shader>⤶
<description>⤶
This is a shader for depth write. It can either write all the depth from the scene at once or render models one by one, but with alpha support. It also has [treesway](https://developer.valvesoftware.com/wiki/$treesway) support.⤶
<note>This shader outputs Depth based on `ProjPos.W`, so it's only suitable for Perspective cameras. It won't work with Orthographic projection (shadow maps), since `ProjPos.W` for Orthographic is always equal to `1`. In this case, you'll need to create your own shader analogous to DepthWrite that outputs `ProjPos.Z` using <page>Shaders/screenspace_general</page>.</note>⤶
<warning>The shader does not support `$basetexturetranform`, so the depth buffer-based shaders may not match the actual image.</warning>⤶
</description>⤶
<parameters>⤶
<item name="BASETEXTURE" type="ITexture">⤶
Basetexture allows the shader to work with the `.a` channel to create alpha support for depth.⤶
</item>⤶
<item name="COLOR_DEPTH" type="boolean" default="false">⤶
Write depth as color. Allows output of `COLOR0` as `ProjPosW / 4000`. This is what <page>render.GetResolvedFullFrameDepth</page> does.⤶
<note>⤶
To normalize the depth buffer, use this formula: `1 / depth / 4000`.⤶
</note>⤶
</item>⤶
<item name="ALPHATEST" type="boolean" default="false">⤶
Allows you to `clip` in the shader using the `.a` channel of `basetexture`, adding alpha support.⤶
</item>⤶
<item name="ALPHATESTREFERENCE" type="float">⤶
Sets the alpha threshold: `clip( color.a - g_AlphaThreshold );`.⤶
</item>⤶
<item name="NOCULL" type="boolean" default="0">⤶
Culling control - `1` = nocull, `0` = do cull.⤶
</item>⤶
<item name="TREESWAY" type="integer" default="0">⤶
What option to use for the tree swaying effect. Treesway parameters can be found here: [treesway](https://developer.valvesoftware.com/wiki/$treesway).⤶
</item>⤶
</parameters>⤶
</shader>⤶
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